Cultivator



13,0.EVER'EST. Cultivator No.,2 39,947. Patented April 12,1881.

, wnnssszs METERS, PHOTO-LITHOGRAPHER, WASHINGTON. D. C,

UNITED STATES PATENT OFFICE.

DAVID O. EVEREST, OF KALAMAZOO, MICHIGAN.

CULTIVATO R.

SPECIFICATION formingpart of Letters Patent No. 239,947, dated April 12, 1881. Application filed October 25, 1879.

To all whom it may concern:

Be it known that 1, DAVID 0. EVEREST, of Kalamazoo, in the county of Kalamazoo and State of Michigan, have invented certain new and useful Improvements in Cultivators; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it pertains to make and use it, reference being had to the accompanying drawings, which form part ofthis specification.

My invention relates'to cultivators, &c., and especially to cultivator-teeth and it consists in the parts and in the construction and combination of parts substantially as indicated in the drawings, and as hereinafter specified and claimed. i

In the drawings, Figure 1 represents a single cultivator-tooth according to my invention, said cultivator-tooth being represented as attached to its frame. Fig. 2 is a view, in rear elevation, of the device shown in Fig. 1. Fig.

3 is a section view, illustrating the connection between the spring E,shoe B, link I), and blade A; and Fig. 4 is a View illustrating the position of part-s when the blade is pushed backward.

In the said drawings, A is the tooth proper, or what may be termed the blade of the tooth. It is constructed in such a manner that either of its ends may be broughtin contact with the ground for operation, so that if one end should become dull or disabled the other end might be used. It is, moreover, made circular-in form, and is attached to a counterpart seat or rest,

B, by aslot and set-screw connection, (3, or any equivalent thereof, whereby the ground-point of the blade A may be adjusted at pleasure.

D is a link connecting the free ends of the spring E, and has rigidly attached to it the bed or seat B of the blade A. t

F is the cultivator-frame, of any suitable construction, dimensions, or material. The spring E is attached to the frame F at any convenientpoint between its free ends. Thus attached the free ends of the spring E are left at liberty to move in such a manner as to enable the blade A to yield in a backward direction to any pressure, and to return toits normal position when said pressure or resistance is removed.

As illustrated in Fig. 4 of the drawings, the device, as shown and thus far described. will operate as follows: When pressure or resistance is brought against the front of the blade A it will yield by reason of its peculiar attachment to the free ends of the spring E, and each end of the spring will be bent substantially as indicated in the drawings.

It is apparent that my device is applicable to other devices besides cultivators.

gang) might be constructed with its blade and spring according to this my invention.

My device would also be applicable as a harrow-tooth; and I do not limit myself in any degree to the employment of my invention in cultivators, as it may be employed for plows or barrows.

What I claim is r 1. In combination with a supporting-frame,

, F, a spring having its two free ends adapted to admit of an attachment thereto of a plowing or cultivating tooth or blade, substantially as and for the purpose shown.

2. In combination with the frame of a harrow, plow, or cultivator, a spring attached between the free ends to said frame, the free ends of said spring adapted for the attachment thereto of a plow-blade or cultivating-tooth, substantially as and for the purpose shown.

3. The curved spring E, attached at a point between its ends to a suitable frame, in combination with the link D, or its equivalenhand a plow-blade or cultivator-tooth, substantially as and for the purpose shown.

' In testimony whereof I have signed my name to this specification in the presence of two su bscribing witnesses.

DAVID 0. EVEREST.

Witnesses 9 T. T. GIDDING, MARIAN ARCAMBAL.

If made of sufficient size and strength, a plow (single or 

